6
The meter and probe are factory calibrated.
However, to ensure accuracy, the meter should be
calibrated at least once a month. The meter is
shipped with 2.76 mS/cm calibration solution. If you
are interested in calibrating to a concentration less
than 2 mS/cm, you will need to change the range
mode of the meter to AUTO (see
Range Selection,
p. 9). Periodically, the calibration of the meter can
be checked by immersing the sensor in the
calibration solution. This solution should not be re-
used at a later date.
Calibration Procedure
1.) Open battery compartment lid on the top of the
meter to access the small white Increment (INC) and
Decrement (DEC) calibration keys. When looking at
the battery compartment with the calibration keys
above the batteries, the DEC key will be to the left.
Probe Calibration
DEC
key
INC
key